Jerry Rice wasn't the biggest or fastest either.
Neither was Isaac Bruce.
Or Jimmy Smith.
Or Marvin Harrison.
Check thier stats.
Rarely is a great WR a great WR because they are the "fastest" or the " biggest".
In fact, I can hardly think of one great receiver that was great due to him being so fast.
WR is about routes, setting up defenders, strong hands, just having a feel of how to move and when. Toughness.
Snead is displaying several of these unique traits of being a great receiver.
He had an outstanding rookie season. We'll see how it goes this year.
But don't say " he won't be a one because he isn't the biggest or fastest"